JPH08226044A - Three-dimensional fabric - Google Patents

Abstract

PURPOSE: To form a good continuous cylindrical shape, secure high impact resilience, remarkably improve tensile strength and attain remarkable shortage of heat-treating time by constituting a fabric in continuous cylinder by dry heat restriction shrinkage treatment using a highly shrinkable yarn. CONSTITUTION: Upper and lower ground structures 3 and 3 in which warp 1 and weft 2 are constituted by plane weave or doup weave are provided and highly shrinkable yarn 4 having >=30% shrinkage factor is arranged at prescribed interval in the warp direction or weft direction between upper and lower ground structures 3 and 3 and a mixed weave 4c binding highly shrinkage yarn 4 to ground structure 3 is formed in single fabric part and an intermediate float yarn 4d in which the highly shrinkable yarn 4 and the ground structure 3 are unbound is formed in double fabric part to constitute a mixed fabric and the mixed fabric is subjected to dry heat restriction shrinkage treatment to form the fabric of continuous cylindrical structure.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a cushioning material, a breathable cushioning material, a water-permeable cushioning material, a civil engineering material,
The present invention relates to a continuous tubular three-dimensional structure cloth used for multiple purposes such as a filter material for an air conditioner, a drainage net material, and a material for hydroponic cultivation.

[0002]

2. Description of the Related Art As a conventional continuous tubular three-dimensional structure cloth,
For example, there is one described in Japanese Utility Model Laid-Open No. 3-88462. That is, heat treatment is performed on a woven fabric made of a plain weave or a weaving weave in which the surface material is a combination of synthetic resin fibers having a large heat shrinkability and synthetic resin fibers having a smaller or no heat shrinkability. Then, the heat-shrinkable synthetic resin fiber has a small heat-shrinkability, or an elastic portion is formed by bending the heat-shrinkable synthetic resin fiber,
It is a three-dimensional structured cloth configured in a continuous tubular shape.

However, in this conventional three-dimensional structure cloth, since polyethylene monofilament having a maximum shrinkage of about 20% is used as the synthetic resin fiber having a large heat shrinkability, a sufficient shrinkage cannot be obtained. Due to this, it is not possible to obtain a good continuous tubular shape of the three-dimensional structure fabric, so it is inevitably a very thin flat tube shape (thickness is at most about 2 to 5 mm) and rebound resilience. Not only was the force reduced, but the tensile strength was weak and durability was poor. In addition, due to the poor shrinkage of the polyethylene monofilament, there is a problem that the heat treatment time also requires a long time of 0.5 to 3 hours.

[0004]

The invention according to claim 1 of the present invention is shaped by using a high shrinkage yarn having a shrinkage ratio of 30% or more and forming it into a continuous tubular shape by dry heat limited shrinkage treatment. In addition to being able to form a good continuous tubular shape, it is possible to secure a high impact resilience, to significantly improve the tensile strength, and to significantly shorten the heat treatment time. The purpose is to provide structural cloth.

In the second aspect of the present invention, in addition to the object of the first aspect of the invention, it is sufficient to use a copolymerized polyethylene terephthalate having a shrinkage of 45 to 50% as the highly shrinkable yarn. Secure a high shrinkage rate,
It is an object of the present invention to provide a three-dimensional structure cloth which has a more favorable continuous tubular shape and can improve the high impact resilience.

[0006]

The invention according to claim 1 of the present invention is to provide an upper and lower ground weave constructed by plain weave or reed weave of warp and weft, and between the upper and lower weaves. The high-shrinkage yarns having a shrinkage ratio of 30% or more are arranged at a predetermined interval in the vertical direction or the horizontal direction to form a cross-woven fabric that connects the high-shrinkage yarns and the ground structure in the single weave portion, while the high-shrinkage yarns are formed in the double weave portion. It is characterized in that it is a three-dimensional structured fabric in which a woven fabric composed of an intermediate part floating yarn that is not bonded to the ground structure is subjected to a dry heat limited shrinkage treatment to form a continuous tubular shape.

The invention according to claim 2 of the present invention is, in addition to the object of the invention according to claim 1, characterized in that it is a three-dimensional structure cloth using copolymerized polyethylene terephthalate as the highly shrinkable yarn.

[0008]

According to the invention described in claim 1 of the present invention, the woven fabric in which the high shrinkage yarn is interwoven in the single woven portion and the high shrinkage yarn is the intermediate floating yarn in the double woven portion is dried. When the heat-restricted shrinkage process (the process of limiting and regulating the shrinkage rate for shaping the tubular shape), the high shrinkage yarn has a shrinkage rate of 3 in its arrangement direction.
Since the shrinkage is 0% or more and the shrinkage is limited, it is possible to form a good shaped continuous tubular three-dimensional structure cloth. As a result, a high impact resilience can be secured, and the tensile strength can be significantly improved, and the heat treatment time can be significantly shortened.

According to the invention of claim 2 of the present invention,
In addition to the effect of the invention described in claim 1, since the copolymerized polyethylene phthalate having a shrinkage rate of 45 to 50% is used as the high shrinkage yarn, a sufficient shrinkage rate can be ensured and high shrinkage can be achieved. Depending on the ratio, there is an effect that it is possible to form a more preferable continuous tubular shape and to improve the high impact resilience.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings. The drawing shows a three-dimensional structure cloth. In FIG. 1, a warp yarn 1 and a weft yarn 2 are made of a polypropylene monofilament having a denier of 1000 (this monofilament is a rigid monofilament capable of maintaining the three-dimensional structure shape stability of the three-dimensional structure cloth). Using the vertical density of 25 threads / inch and the horizontal density of 7 threads / inch (however, it is schematically shown in the drawing), the above vertical thread 1 and the horizontal thread 2 are knitted (see FIG. 5) and The upper and lower ground textures 3 and 3 in which the yarns 1 and 2 are not displaced are configured.

A high shrinkage yarn 4 having a high shrinkage rate of 45 to 50% in the weft direction (the same direction as the weft yarn 2 in FIG. 1) between the upper and lower ground textures 3 and 3 and having a denier of 1000 denier is used. Polymerized polyethylene terephthalate multi-threads (here, multi-threads are ones composed of a large number of threads) are arranged at equal intervals of 2.5 threads / inch.

Thus, in the single woven portion S, the above-described high shrinkage yarn 4 and the ground weave 3 are formed into a cross weave 4c which is connected by a plain weave, while in the double weave portion D, the above high shrinkage yarn 4 is connected to the ground weave 3. The interwoven fabric E formed of the unbonded intermediate portion floating yarn 4d is configured. Here, the length of the single woven portion S is set to, for example, 1 cm, and the length of the double woven portion D is set to, for example, 4 cm.

The mixed woven fabric E shown in FIG.
A 45% continuous width setting process (dry heat limited shrinkage process) for 5 minutes at 0 ° C dry heat, and a continuous vertical tubular three-dimensional structure cloth with a diameter of the tubular portion of about 2.5 cm ^φ as shown in Fig. 2. This is a configuration of F. That is, when the above-mentioned woven fabric E is subjected to the dry heat limited shrinkage treatment, the high shrinkage yarn 4 shrinks in the longitudinal direction by a predetermined percentage, so that the double woven portion D becomes a tubular shape and the single woven portion S
The ground structure 3 is bent so that the portions are connected to each other in a tubular shape, and a continuous vertical tubular three-dimensional structure cloth F is formed.

In this way, the high shrinkage yarns 4 in the above-mentioned single woven portion S are
4c is mixed and the high shrinkage yarn in the double woven portion D is the intermediate floating yarn 4
When the woven fabric (mixed woven fabric) E designated as d is subjected to a dry heat limited shrinkage treatment (a treatment to limit and regulate the shrinkage ratio to form a shape), the high shrinkage yarns 4 shrink in the arranging direction (horizontal direction). 30% or more and limited shrinkage (45% in this example)
Since it contracts, it is possible to form a good shaped continuous tubular three-dimensional structured fabric F.

As a result, a high impact resilience can be secured, and the tensile strength can be significantly improved, and the heat treatment time can be significantly shortened.

In addition, since the copolymerized polyethylene terephthalate having a shrinkage of 45 to 50% is used as the high shrinkage yarn 4 described above, a sufficient shrinkage can be ensured, and the high shrinkage makes it even better. With such a continuous vertical tube shape, there is an effect that the high repulsion elastic force can be improved.

The above-mentioned ground structure 3 may be constructed by plain weaving the warp yarn 1 and the weft yarn 2 as shown in FIG.
Further, the continuous vertical tubular three-dimensional structure cloth F having the above-mentioned configuration is configured to have a uniform thickness, has a large repulsive force and elastic force, and is excellent in breathability, water permeability, and cushioning property. It can be used for various purposes such as materials, civil engineering materials, air conditioner filter materials, drainage net materials, hydroponic cultivation materials, and the like.

FIGS. 3 and 4 show another embodiment of the three-dimensional structure cloth. In FIG. 3, 1000 warp yarns 1 and two weft yarns are made of polypropylene monofilament having a denier of 1000 (this monofilament is the three-dimensional structure stability of the three-dimensional structure cloth). (A monofilament having a rigidity capable of maintaining the above) is used, the warp density is 25 filaments / inch, the weft density is 7 filaments / inch (however, it is schematically shown in the drawing), and the warp yarn 1 and the weft yarn 2 described above are used. A full weave (see FIG. 5) is used to form upper and lower ground textures 3 and 3 in which the yarns 1 and 2 are not displaced.

As the high shrinkage yarn 5 in the vertical direction (the same direction as the vertical yarn 1 in FIG. 3) between the upper and lower ground structures 3 and 3, the shrinkage ratio is 45 to 50% and the copolymerization is 1000 denier. Polyethylene terephthalate multi-threads (here, multi-threads are different from each other in the number of multi-threads) are used and arranged at equal intervals of 2.5 threads / inch.

Thus, in the single woven portion S, the above-mentioned high shrinkage yarn 5 and the ground weave 3 are combined to form a cross weave 5c, while in the double woven portion D, the above-mentioned high shrinkage yarn 5 (entangled yarn) is formed. Constitutes a mixed woven fabric G composed of an intermediate portion floating yarn 5d that is not bonded to the ground structure 3. Here, the length of the single woven portion S is, for example, 1
cm, and the length of the double weave portion D is set to 4 cm, for example.

The mixed woven fabric G shown in FIG.
After 45% overfeed treatment (dry heat restriction shrinkage treatment) for 5 minutes at 0 ° C dry heat, a continuous horizontal tubular three-dimensional structure cloth H with a diameter of the tubular portion of about 2.5 cm ^φ as shown in Fig. 4 is obtained. It is composed. That is, when the above-mentioned woven fabric G is subjected to the dry heat limited shrinkage treatment, the high shrinkage yarn 5 shrinks in the longitudinal direction by a predetermined percentage, so that the double woven portion D becomes a tubular shape and the single woven portion S
The ground tissue 3 is bent so that the portions become the connecting portions between the tubular shapes, and the three-dimensional fabric H having a continuous horizontal tubular shape is formed.

As described above, the high shrinkage yarn 5 is used in the above-mentioned single woven portion S.
Is woven 5c and the high-shrinkage yarn 5 in the double woven portion D is the intermediate-part floating yarn 5d (mixed woven fabric) G is subjected to dry heat-limited shrinkage treatment (treatment for limiting and controlling the shrinkage rate to form a shape). )
Then, the high shrinkage yarn 5 has a shrinkage ratio of 30% or more in the arrangement direction (vertical direction) and a limited shrinkage (4 in this embodiment).
Since it shrinks by 5%), it is possible to form a good shaped continuous tubular three-dimensional structured fabric H.

As a result, a high impact resilience can be ensured, and the tensile strength can be greatly improved, and the heat treatment time can be greatly shortened.

In addition, since the copolymerized polyethylene terephthalate having a shrinkage rate of 45 to 50% is used as the high shrinkage yarn 5 described above, a sufficient shrinkage rate can be ensured, and the high shrinkage rate makes it even better. With such a continuous horizontal tubular shape, there is an effect that the high repulsion elastic force can be improved.

The ground structure 3 may be formed by plain weaving the warp yarn 1 and the weft yarn 2 as shown in FIG.
In addition, the continuous horizontal tubular three-dimensional structure cloth H having the above-mentioned configuration is configured to have a uniform thickness, has a large repulsive force and elasticity, and
Since it has excellent breathability, water permeability and cushioning properties,
It can be used for various purposes such as a breathable cushioning material, a water-permeable cushioning material, a civil engineering material, a filter material for an air conditioner, a drainage net material, and a hydroponic cultivation material. In the correspondence between the structure of the present invention and the above-described embodiment, the warp yarn 1 and the weft yarn 2 of the present invention correspond to the polypropylene monofilament of 1000 denier of the embodiment, and the ground structure 3 is the same as in FIG. Corresponding to the Reiki weave shown in Fig. 6 or the plain weave shown in Fig. 6, the high shrinkage yarn with a shrinkage rate of 30% or more is 100
Although it corresponds to a 0 denier copolymerized polyethylene terephthalate multi-system, the present invention is not limited to only the constitution of the above-mentioned embodiment.

For example, in each of the above-mentioned embodiments, both the warp yarn 1 and the weft yarn 2 are made of monofilaments. One of them is a monofilament, the other is a multifilament,
The flat filament may be used, and as the material of the monofilament, polyester, polyamide, polyethylene or the like may be used in place of the exemplified polypropylene, and the fineness of the monofilament used is 1000 depending on the application. Besides denier, it can be freely selected in the range of 100 to 2000 denier, and the cushioning property can be arbitrarily adjusted by selecting denier.
It is suitable for rough breathability and rough water permeability because it has low rebound resilience, and it is a natural yarn for warp or weft when it is required to corrode over time. Fibers and synthetic fibers may be used, and the high shrinkage yarns 4 and 5 have a shrinkage difference of 10 with respect to monofilaments, multi-type yarns and flat yarns constituting the ground structure.
~ 50% is desirable.

In addition, the vertical density, the horizontal density, the arrangement density of the high shrinkage yarns 4 and 5, the length of the single woven portion S, and the length of the double woven portion D shown in the examples are merely examples and can be used depending on the application. Then, these can be set arbitrarily.

[Brief description of drawings]

FIG. 1 is a partial plan view showing a state of a three-dimensional structure cloth of the present invention before dry heat restriction shrinkage.

FIG. 2 is a partial perspective view showing a continuous vertical tubular three-dimensional structure cloth of the present invention.

FIG. 3 is a partial plan view showing another embodiment of the three-dimensional structure cloth of the present invention before dry heat restriction shrinkage.

FIG. 4 is a partial perspective view showing the continuous horizontal tubular three-dimensional structure cloth of the present invention.

FIG. 5 is a partial plan view showing an example of a ground structure.

FIG. 6 is a partial plan view showing another example of the ground structure.

[Explanation of symbols]

 1 ... Warp yarn 2 ... Koyo yarn 3 ... Ground structure 4,5 ... High shrinkage yarn 4c, 5c ... Interwoven 4d, 5d ... Intermediate floating yarn E, G ... Woven fabric F, H ... Three-dimensional structure fabric D ... Double weave S … Single Oribe

Claims (2)

[Claims] 1. A highly shrinkable yarn having upper and lower ground textures formed by plain weave or reed weave of warp threads and weft threads, and having a shrinkage ratio of 30% or more in the warp direction or the weft direction between the upper and lower ground textures. Are arranged at a predetermined interval to form a cross-woven fabric that connects the high shrinkage yarn and the ground weave in the single weave portion, and an intermediate part floating yarn in which the high shrinkage yarn is not joined to the ground weave in the double weave portion. A three-dimensional structure cloth that is formed into a continuous tubular shape by subjecting it to dry heat limited shrinkage treatment. 2. The three-dimensional structured cloth according to claim 1, wherein copolymerized polyethylene terephthalate is used as the highly shrinkable yarn.